An anime adaptation directed by Naoko Yamada, written by Reiko Yoshida, and produced by Kyoto Animation began airing on April 3, 2009 on TBS in Japan. The episodes began airing on subsequent networks at later dates which include BS-i, MBS, and Chubu-Nippon Broadcasting. The TBS airings are in 4:3 ratio, and the series began airing in widescreen on BS-TBS on April 25, 2009.
K-On!’s story revolves around four Japanese high school girls who join their school’s light music club to try to save it from being abolished. However, they are the only members of the club, and at first Yui Hirasawa has no experience playing musical instruments or reading sheet music.
From:Wikipedia
